Biopsychology-Nervous system

Question 1

What are the two parts the CNS can be divided into?

Answer 1

The CNS and the peripheral nervous system

Question 2

What’s the function of the Peripheral Nervous System?

Answer 2

Sends information to the CNS and transmits messages from the CNS to muscles and glands in the body

Question 3

What is the function of the central nervous system?

Answer 3

The CNS consists of the brain and the spinal cord,the and it passes messages to and from the brain and connects nerves to the PNS

Question 4

what are the two divisions of the peripheral nervous system?

Answer 4

the somantic and autonomic systems

Question 5

whats the somatic systems role?

Answer 5

to transmit and receive messages from the senses such as visual information from the eye
-directs muscles to react and move

Question 6

what does the autonomic system do?

Answer 6

helps transmit and receive information and is further divided into two sections

Question 7

what are the two sections that the autonomic system is split into?

Answer 7

the sympathetic system-increases activity

the parasympathetic system-conserves the bodies natural activity levels by maintaining it

Question 8

what is the function of the sensory neuron?

Answer 8

tell the rest of the brain about the external and internal environment by processing information taken from one of the 5 senses

Question 9

what the function of the relay neuron?

Answer 9

carry messages from one part of the CNS to the other

Question 10

whats the function of the motor neuron?

Answer 10

carry signals from the CNS that helps organs

Question 11

what is a synaptic transmission?

Answer 11

the process by which nerve impulses are carried across the synapse,the nerve impulse is an electrical signal thats carried by the chemicals called neurotransmitters

Question 12

whats is a excitatory potential?

Answer 12

these make it more likely for the neutron to fire and so if a synapse is more likely to cause the post synaptic neutron to fire

Question 13

whats an inhibitory potential?

Answer 13

makes it less likely for the post synaptic neutron to fire

Question 14

what does the endocrine system do?

Answer 14

sends information as chemical signals involimg glands and hormones

Question 15

what are the 4 glands in the endocrine system?

Answer 15

• pituitary
• adrenal
• testes
• ovaries

Question 16

what does the CNS consist of?

Answer 16

the brain and the spinal chord and is the origin of all complex demands

Question 17

what did research find about the oxytocin hormone?

Answer 17

it is thought to be particularly important for the reproductive behaviours as it is released following an orgasm which aids conception

Question 18

what is the fight or flight response?

Answer 18

a reflex response designed to help an individual manage psychically under threat and is also activated in times of stress as the body perceives stress to be threat

Question 19

what are the three steps of the fight or flight response?

Answer 19

• the hypothalamus recognises that there is a threat
• sends message to the adrenal gland
• triggers release of adrenaline to the endocrine system and noradrenaline to the brain

Question 20

what is the hypothalamus?

Answer 20

-part of the brain that is located in the centre of the brain and deals with basic survival factors

Question 21

what is the adrenal gland?

Answer 21

gland that releases adrenaline

Question 22

what are the physical changes of the fight or flight response?

Answer 22

increases heart rate
faster breathing
muscle tension
pupil dilation 
production of sweat